43012099 has 4 divisors (see below), whose sum is σ = 46320736. Its totient is φ = 39703464.

The previous prime is 43012087. The next prime is 43012117. The reversal of 43012099 is 99021034.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43012099 - 2¹³ = 43003907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43012399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654299 + ... + 1654324.

It is an arithmetic number, because the mean of its divisors is an integer number (11580184).

Almost surely, 2^43012099 is an apocalyptic number.

43012099 is a deficient number, since it is larger than the sum of its proper divisors (3308637).

43012099 is a wasteful number, since it uses less digits than its factorization.

43012099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308636.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 43012099 is about 6558.3609995181. The cubic root of 43012099 is about 350.3726615722.

It can be divided in two parts, 4301 and 2099, that added together give a square (6400 = 80²).

The spelling of 43012099 in words is "forty-three million, twelve thousand, ninety-nine".